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Web and VoIP(FreeSWITCH, WebRTC) engineer

Russia
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Last active: 3 days ago
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Tests: 4
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Portfolio: 2

I'm a skilled software developer and VoIP engineer with more than 15 years of experience. I'm also a full-stack developer of the convergent systems of voip and web. Playing with Freeswitch, Kazoo, SipXecs, Ruby, Perl, JS(node.js), C/C++ and much, much more - I'm always choosing tools for the task.
Probably the most important thing which differs me from others - I'm never working just to gain money. I'm always doing my best to reach your goal the fastest way possible. If you've chosen a non-optimal solution I'll correct it and suggest a more efficient way. I'm never promising something that you're probably expecting to hear instead of the realistic estimate of your project. I'm never lying to my clients and I'm always giving all the information I have - transparently and on a regular basis. In one word - you can trust me as you trust yourself.

I have more than 10 years of experience in installation and support of carrier-grade VoIP services based on Asterisk, OpenSIPS, Kamailio, Freeswitch and proprietary SIP/VoIP software.
My professional interests are Callcenters, automated dialer systems and integration of VoIP software with company information flows.
You can rely on my strong engineering and programming skills for projects starting from single VoIP server to a complete wholesale/carrier VoIP solutions including billing, call data analysis, security and fraud prevention.
I have developed complete SIP solutions for VoIP carriers worldwide: Proxy/Registrars, IVR, prepaid systems, multi-tenant VoIP switches, hardware PSTN gateways (Cisco AS5300/5500, Audiocodes Mediant 2000, Quintum Tenor).
I have experience in setup, administration and security of Asterisk, FreePBX, Elastix and FreeSWITCH PBX installations.
As a programmer I use PHP, Javascript (both client-side using jQuery and Angular.js and server-side with node.js), Perl (system scripts/applications, Mojolicious webapps). I also have experience in development and administration of MySQL and Microsoft SQL Server databases.
I'm experienced network engineer, skilled in routing and switching, general network architecture planning and deployment, network monitoring and security, including HA solutions (heartbeat/pacemaker). I use Zabbix and have some experience with Nagios and other monitoring software.
I can also offer you consulting support in VoIP and network technologies.

i am a full stack web developer and server administrator (FreeSWITCH)
i have experiences on Django (python), Codeigniter (php), MongoDB, ElasticSearch, postgres, redis, rabbitMQ, celery, mysql, nodejs.
you can hire me if you need to implement a distributed VoIP enabled service based on freeswitch/kamailio that is ready to scale.
i am also doing newfies-dialer customization and maintenance for a long while.
and also i will take projects like PBX, IVR, autodialer development.
i have open source project customization experiences, for example, FusionPBX,Newifes-dialer,Astpp,vBilling,kazoo, Kannel

SysAdmin / Asterisk & FreeSWITCH Expert

Canada
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Last active: 09/25/2014
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Tests: 3
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Portfolio: 1

I am a highly effective systems administrator with10+ years of Windows, Linux, and FreeBSD experience. In the last few years I have also gained AS400 experience.
10 years of Asterisk knowledge including AGI programing in perl and PHP as well as Digium and Sangoma card configuration and troubleshooting.
3 years of experience with OpenStreetMaps.
4 years of FreeSWITCH experience.
18 years of network administrator experience.

VoIP Consultant [Asterisk, freeSWITCH, Kamailio, OpenSIPs, Vyatta]

Canada
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Last active: 4 days ago
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Tests: 3
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Portfolio: 15

Since last 7 years now I'm involved intensely in end-to-end VoIP setups. That included pre-deployment 360 degree Architecture planning. Actual development of the projects, including aiding other teams develop the exact required component for the projects. And after deployment Support.
My career objectives are to be a very flexible expert capable of working on almost any layer. Come up with intelligent solutions to help achieve business goals smartly.
I'm proficient in following domains
* VoIP
* Server Administration
* Network Administration
I've experience in Following tools.
* Asterisk
* FreeSwitch
* OpenSIPs
* Kamailio
* SEMS
* Vyatta
* MySQL
* Linux OSs
I've worked in following languages.
* C++
* Perl
* Php
* Shell scripting
Find More about Me from my VoIP Blog: http://saevolgo.blogspot.com

Freeswitch/Asterisk/OpenSIPS/Kamailio/Linux/Network/VoIP Enthusiast

Russia
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Last active: 09/05/2014
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Tests: 1
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Portfolio: 1

Telecom Software and Network Engineer more than 6th years in companies - communication providers. I have extensive experience with deploying a complete infrastructure of voip provider, using OpenSource telephony technologies such as freeswitch, asterisk, OpenSIPS\Kamailio, kazoo, etc. Mostly I'm dealing with emerging startups or with small but accomplished voip companies which want to improve\reorganize their infrastructure; create something new or fix some issue on their network. So it is main area but sure I can help with other projects that correspond to my list of skills.

Asterisk Expert and System Administrator

Russia
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Last active: 2 months ago
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Tests: 10

I work on IT more than 12 years. VOIP/Asterisk Developer, Expert System Administrator and Network Administrator, Perl Programmer.
Generally, I develop solutions based on Asterisk and speech technologies (speech synthesis and speech recognition systems), complex IVRs, integration with external sources and databases, custom click-to-call and callback systems, etc.
I prefer custom development for Asterisk and FreeSWITCH. Usually, I use Perl for development.
I have huge experience in solutions based on Asterisk such as FreePBX, Elastix, Trixbox, vicidial, etc.
Also I support critical 24x7 systems, administration networks and servers, perform IT consulting, etc.

Senior telecoms developer/CTO

United States
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Last active: 6 months ago
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Tests: 2

I've been developing software commercially for more than a quarter of a century, both as an employee of large organisations (IBM) and, to a greater extent, as my own boss. I've built and sold two businesses along the way, learning a great deal from having done so.
My focus has been on telecoms. I developed TDM IVR systems based around Aculab and Dialogic cards in the late 1990s, and have, more recently, been involved in developing IP solutions using Asterisk, Kamailio and FreeSWITCH. These have included an IP Centrex platform (Asterisk and SER), a carrier-grade softswitch (FreeSWITCH) and various IVR solutions (Kamailio and FreeSWITCH).
I'm fluent in a number of languages, including C, PHP, Perl, C# and Javascript, am happy to develop on Windows or Linux and have been using Agile development methods - in particular, release early and often - since before the term Agile was coined.
I'm experienced with managing small teams of developers, and understand the importance of delivering the agreed product on time and within budget.

VOIP/Linux/Asterisk/Freeswitch Expert

China
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Last active: 06/29/2014
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Tests: 2
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Portfolio: 1

-VoIP and telecom equipment and technologies.
Over the past 7 years of working with successfully deployed VoIP services and applications,
I always aim to pursue the highest level of professionalism as an expert by handling complex projects with good
attention to details. An extra-ordinary skills in order to examine data, in order to find the most effective solution.